The attached patch fixes the broken menu+left/right for volume change on
players. Releasing left/right while holding menu down would cause a
button event resulting in mpeg_next/mpeg_prev... Also makes the related
code a bit clearer (based on zuggestions from Zagor) and adds
status_draw() when the volume changes (player only; but wasn't that
added earlier?).

Note: only tested on a player. Hope I didn't break recorder compiles...
:)